A freeze warning has been issued for parts of Massachusetts as the weather forecast calls for temperatures to plummet in the Boston area late Thursday night into Friday morning.

It has been one of the warmest starts to October on record, but all of that is about to change. A crisp, chilly airmass is bringing the coldest air of the season thus far.

How cold will it be in Boston?

High temperatures on Thursday will be some 20-to-25 degrees colder than what we have been experiencing in recent days.

But it is Thursday night when the real chill arrives.

WBZ-TV graphic. CBS Boston

With clear skies, dry air and light winds, temperatures will drop like a rock Thursday night into early Friday. This has prompted the National Weather Service to issue a freeze warning from 11 p.m. Thur

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